GNU Radio 3.5.3.2 C++ API
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00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2006 Free Software Foundation, Inc. 00004 * 00005 * This file is part of GNU Radio 00006 * 00007 * GNU Radio is free software; you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation; either version 3, or (at your option) 00010 * any later version. 00011 * 00012 * GNU Radio is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with GNU Radio; see the file COPYING. If not, write to 00019 * the Free Software Foundation, Inc., 51 Franklin Street, 00020 * Boston, MA 02110-1301, USA. 00021 */ 00022 #ifndef INCLUDED_ATSC_FIELD_SYNC_MUX_H 00023 #define INCLUDED_ATSC_FIELD_SYNC_MUX_H 00024 00025 #include <atsc_api.h> 00026 #include <gr_sync_block.h> 00027 #include <atsc_types.h> 00028 00029 class atsc_field_sync_mux; 00030 typedef boost::shared_ptr<atsc_field_sync_mux> atsc_field_sync_mux_sptr; 00031 00032 ATSC_API atsc_field_sync_mux_sptr atsc_make_field_sync_mux(); 00033 00034 /*! 00035 * \brief Insert ATSC Field Syncs as required (atsc_data_segment --> atsc_data_segment) 00036 * \ingroup atsc 00037 * 00038 * input: atsc_data_segment; output: atsc_data_segment 00039 */ 00040 class ATSC_API atsc_field_sync_mux : public gr_sync_block 00041 { 00042 friend ATSC_API atsc_field_sync_mux_sptr atsc_make_field_sync_mux(); 00043 00044 atsc_field_sync_mux(); 00045 00046 public: 00047 void forecast (int noutput_items, gr_vector_int &ninput_items_required); 00048 int work (int noutput_items, 00049 gr_vector_const_void_star &input_items, 00050 gr_vector_void_star &output_items); 00051 00052 00053 static const int N_SAVED_SYMBOLS = 12; 00054 00055 void reset() { /* nop */ } 00056 00057 protected: 00058 gr_uint64 d_current_index; 00059 bool d_already_output_field_sync; 00060 unsigned char d_saved_symbols[N_SAVED_SYMBOLS]; 00061 }; 00062 00063 00064 #endif /* INCLUDED_ATSC_FIELD_SYNC_MUX_H */